JPH07100619A - Low pressure casting method of cage rotor - Google Patents
Low pressure casting method of cage rotorInfo
- Publication number
- JPH07100619A JPH07100619A JP24583493A JP24583493A JPH07100619A JP H07100619 A JPH07100619 A JP H07100619A JP 24583493 A JP24583493 A JP 24583493A JP 24583493 A JP24583493 A JP 24583493A JP H07100619 A JPH07100619 A JP H07100619A
- Authority
- JP
- Japan
- Prior art keywords
- die
- mold
- preheating device
- pressure casting
- low
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Abstract
Description
【０００１】[0001]
【産業上の利用分野】この発明は、純アルミニウム又は
シリコンなどを含有するアルミニウム合金を使用するか
ご形回転子の低圧鋳造方法に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a low pressure casting method for a squirrel cage rotor using pure aluminum or an aluminum alloy containing silicon or the like.
【０００２】[0002]
【従来の技術】図３は一般的なかご形回転子の扇形状の
縦断面図である。軸穴７６を持つ積層鉄心７の周辺に複
数の溝導体７７は上下の短絡環７８、７５で短絡され、
上の短絡環７８には羽根７９が、下の短絡環７５にはい
ずれ切り落とされる湯口７４が形成される。2. Description of the Related Art FIG. 3 is a vertical cross-sectional view of a fan-shaped general cage rotor. A plurality of groove conductors 77 are short-circuited by the upper and lower short-circuit rings 78 and 75 around the laminated core 7 having the shaft hole 76,
Blades 79 are formed on the upper short-circuit ring 78, and a sprue 74 to be cut off is formed on the lower short-circuit ring 75.
【０００３】このようなかご形回転子の導体の形成方法
には、回転子の外径寸法の小さい方から大別して、ダイ
カスト法、低圧鋳造法（低圧金型鋳造法）及び銅又は銅
合金の溝導体バーに短絡環をろう接するろう接方法があ
る。ダイカスト法は、電気導電率が比較的に良好な純ア
ルミニウム（約９９．７％）を使用して小形のかご形回
転子に適用され、電気的特性、電気的寸法及び機械的強
度の余裕があり、大量生産するので設備投資が容易であ
る。ダイカスト法は回転子の外径で２００〜３００φの
範囲がほぼ限界とされる。回転子の外径で３００〜５０
０φの範囲の回転電機は、比較的に多種少量生産であ
り、導体に純アルミニウムを使用して低圧鋳造法が適用
可能であり、同一寸法のものにダイカスト法を適用する
より材料欠陥がなく品質が良好である。The method of forming the conductor of such a squirrel-cage rotor is roughly classified into those having a small outer diameter dimension of the rotor, and die-casting method, low-pressure casting method (low-pressure die casting method), and copper or copper alloy. There is a brazing method for brazing the short-circuit ring to the groove conductor bar. The die casting method is applied to a small cage rotor using pure aluminum (about 99.7%), which has a relatively good electric conductivity, and has a margin of electric characteristics, electric dimensions and mechanical strength. Yes, and because it is mass-produced, capital investment is easy. In the die casting method, the outer diameter of the rotor is limited to a range of 200 to 300φ. Outer diameter of rotor is 300 to 50
The rotary electric machine in the range of 0φ is produced in relatively small quantities in a relatively large amount, the low-pressure casting method can be applied using pure aluminum for the conductor, and there are no material defects and quality compared to the die-casting method applied to the same size. Is good.
【０００４】図２は従来例の低圧鋳造方法を示す縦断面
図である。図において、溶湯１を補充可能に蓄え空気口
２ａと蓋２ｂとを持つ保持炉２には、ストーク３が底部
近くまで浸漬している。ストーク３の上端に、上下に分
離可能で上湯口４ａを持つ湯溜まり部４が液密に接合さ
れる。下型５は、上湯口４ａと連通可能な型湯口５ｂと
下の短絡環のためのキャビティ５ａとを備える。中間型
６は、軸心に軸６ａを挿入し周辺に導体用の溝のための
キャビティ７ａを備えて積層鉄心７の外周を囲む。上型
８は、上の短絡環のためのキャビティ８ａと羽根のため
のキャビティ８ｂとを備える。湯溜まり部４と下型５と
中間型６と上型８とは相互の接合面で分離可能である。FIG. 2 is a vertical sectional view showing a conventional low pressure casting method. In the figure, a stalk 3 is submerged in the holding furnace 2 which stores the molten metal 1 so that it can be replenished and has an air port 2a and a lid 2b. A basin 4 which is vertically separable and has an upper spout 4a is liquid-tightly joined to the upper end of the stalk 3. The lower die 5 is provided with a die spout 5b capable of communicating with the upper spout 4a and a cavity 5a for a lower short-circuit ring. The intermediate die 6 surrounds the outer circumference of the laminated iron core 7 by inserting the shaft 6a into the shaft center and providing the cavity 7a for the groove for the conductor in the periphery. The upper mold 8 includes a cavity 8a for the upper short-circuit ring and a cavity 8b for the blade. The basin 4, the lower die 5, the intermediate die 6, and the upper die 8 can be separated from each other at their joint surfaces.
【０００５】軸心に軸６ａを挿入した積層鉄心７を下型
５と中間型６と上型８との中に装着し、金型全体を適宜
に予熱して湯溜まり部４に液密に接合した後に、空気な
どの気体圧（０．０５〜０．１気圧程度）を空気口２ａ
から加圧すると、溶湯１はストーク３を上昇し、湯溜ま
り部４、上湯口４ａ、型湯口５ｂを経由し、下の短絡環
のキャビティ５ａ、溝のキャビティ７ａ、上の短絡環の
キャビティ８ａ、羽根のキャビティ８ｂと順次に上昇し
て全キャビティを充満する。キャビティ内の溶湯が凝固
したら、上湯口４ａと型湯口５ｂとの間の導体金属を切
り離すようにして湯溜まり部４から下型５を分離する。
その後に下型５と中間型６と上型８とを分離すれば、中
から溝導体と短絡環と羽根とを備えたかご形回転子が取
り出せる。充分な容積を持つ湯溜まり部４の中の溶湯が
凝固しないうちに下型５を分離する。A laminated iron core 7 having a shaft 6a inserted into the shaft center is mounted in a lower mold 5, an intermediate mold 6 and an upper mold 8, and the entire mold is appropriately preheated to be liquid-tight in the basin 4. After joining, the gas pressure of air (about 0.05 to 0.1 atm) is applied to the air port 2a.
When pressurized from above, the melt 1 rises up the stalk 3, passes through the pool 4, the upper sprue 4a, and the mold spout 5b, and then the lower short-circuit ring cavity 5a, the groove cavity 7a, and the upper short-circuit ring cavity 8a. , And rises in sequence with the blade cavity 8b to fill the entire cavity. After the molten metal in the cavity is solidified, the lower die 5 is separated from the pool 4 by separating the conductor metal between the upper spout 4a and the die spout 5b.
After that, if the lower die 5, the intermediate die 6 and the upper die 8 are separated, a cage rotor having the groove conductor, the short-circuit ring and the blade can be taken out from the inside. The lower mold 5 is separated before the molten metal in the pool 4 having a sufficient volume is solidified.
【０００６】[0006]
【発明が解決しようとする課題】前記の低圧鋳造方法で
はかご形回転子の短絡環７８、７５や溝導体７７に、次
の欠陥が見られることがある。（１）上の短絡環７８に
引け巣欠陥が発生する。（２）上の短絡環７８の表面に
割れ（ヘアークラックなど）が発生する。（３）溝導体
７７に引け巣欠陥が、極端なときには溝導体破断が発生
する。そして、これらの欠陥（１）、（２）、（３）は
かご形回転子が大形であるほど、短絡環７８、７５の断
面積（容積）が大きいほど、積層鉄心７が長く導体溝７
７が細いほど、発生しやすく、疲労強度も低下する。そ
のような種類のかご形回転子は銅又は銅合金の溝導体バ
ーに短絡環をろう接する方法に設計変更せざるを得ず、
高価になる。In the low-pressure casting method described above, the short-circuit rings 78 and 75 and the groove conductor 77 of the cage rotor may have the following defects. (1) A shrinkage cavity defect occurs in the upper short-circuit ring 78. (2) Cracks (hair cracks, etc.) occur on the surface of the upper short-circuit ring 78. (3) When the groove conductor 77 has a shrinkage cavity defect, the groove conductor breaks at an extreme time. The defects (1), (2), and (3) have a longer laminated core 7 as the squirrel cage rotor is larger, and the cross-sectional area (volume) of the short-circuit rings 78 and 75 is larger. 7
The smaller the number 7, the more likely it is that the fatigue strength will decrease. For such a squirrel cage rotor, the design must be changed to the method of brazing the short-circuit ring to the groove conductor bar of copper or copper alloy,
Get expensive.
【０００７】前記の欠陥を分析すると、低圧鋳造方法で
は下方から溶湯を充填するので、金型内の導体が上方か
ら下方へ順次に凝固するという充分な指向性凝固が必要
である。ところが、金型全体は細い溝導体を中間に介し
て上下に肉厚部（短絡環）を有する形状となっていると
共に、中間型は積層鉄心や軸を持って熱容量が大きく、
充分な予熱温度に至っていないことが原因すると判明す
る。こうして指向性凝固が得られないため、押湯効果が
ほとんどないために前記欠陥が発生する。Analyzing the above-mentioned defects, in the low-pressure casting method, since the molten metal is filled from below, sufficient directional solidification is required in which the conductors in the mold are solidified sequentially from above to below. However, the entire die has a shape having thick wall portions (short-circuit rings) at the top and bottom with a thin groove conductor in the middle, and the middle die has a laminated iron core and a shaft and has a large heat capacity.
It turns out that the cause is that the preheat temperature is not sufficient. In this way, the directional solidification cannot be obtained, so that there is almost no effect of the feeder, so that the defect occurs.
【０００８】この発明の目的は、細い溝導体を中間に介
して上下に肉厚な短絡環を有する形状であっても上方か
ら下方へ凝固する指向性凝固を実現して導体の鋳造欠陥
を除去することができるかご形回転子の低圧鋳造方法を
提供することにある。An object of the present invention is to realize a directional solidification in which solidified conductors are solidified from the upper side to the lower side even in the shape having thick short-circuiting rings with a thin groove conductor in the middle, thereby eliminating casting defects of the conductor. It is an object of the present invention to provide a low pressure casting method for a squirrel cage rotor.
【０００９】[0009]
【課題を解決するための手段】この発明のかご形回転子
の低圧鋳造方法は、溶湯を蓄え加圧可能な保持炉の底部
近くまで浸漬したストークの上端に、上湯口を持つ湯溜
まり部を接合させ、下型は、上湯口と連通可能な型湯口
と下の短絡環のためのキャビティとを備え、中間型は、
軸心に軸を挿入し周辺に導体用の溝のためのキャビティ
を備えて積層鉄心の外周を囲み、上型は、上の短絡環の
ためのキャビティを備え、湯溜まり部と下型と中間型と
上型とは相互の接合面で分離可能にされる低圧鋳造装置
を使用するかご形回転子の低圧鋳造方法において、上型
を第１予熱装置で予熱すると共に、軸と積層鉄心を組付
けた中間型と下型とを第２予熱装置で上型より高い温度
で予熱し、その後、各予熱装置から取り出した上型、中
間型及び下型を組み立てて低圧鋳造するものである。According to the method for low-pressure casting of a squirrel-cage rotor of the present invention, a stalk having a top spout is provided at the upper end of a stalk immersed near the bottom of a holding furnace capable of storing and pressurizing molten metal. The lower mold has a mold spout that can communicate with the upper sprue and a cavity for the lower short-circuit ring.
The shaft is inserted in the shaft center, and the cavity for the groove for the conductor is provided in the periphery to enclose the outer circumference of the laminated iron core.The upper die has the cavity for the upper short-circuit ring, and the middle part between the pool and the lower die. In a low-pressure casting method for a squirrel-cage rotor that uses a low-pressure casting device in which the die and the upper die can be separated from each other at the joint surface, the upper die is preheated by the first preheating device, and the shaft and the laminated core are assembled. The attached intermediate die and lower die are preheated by the second preheating device at a temperature higher than that of the upper die, and then the upper die, the intermediate die and the lower die taken out from each preheating device are assembled and low pressure casting is performed.
【００１０】このとき、各予熱装置から取り出した上
型、中間型及び下型を組み立てる直後又は直前に下型の
下面を更に加熱したり、中間型と下型とを第２予熱装置
で予熱完了直前に第２予熱装置内で下型の下面を更に加
熱したりするものである。At this time, immediately after or immediately before assembling the upper mold, the intermediate mold and the lower mold taken out from each preheating device, the lower surface of the lower mold is further heated, or the intermediate mold and the lower mold are preheated by the second preheating device. Immediately before, the lower surface of the lower mold is further heated in the second preheating device.
【００１１】[0011]
【作用】この発明によれば、上型より中間型及び下型の
予熱温度が高いので、溶湯が全キャビティを充満してか
ら凝固するとき、導体が細い溝導体を中間に介して上下
に肉厚な短絡環を有する形状であっても、上方から下方
へ凝固する指向性凝固を実現して導体の鋳造欠陥を除去
することができる。このとき、下型の下面を更に加熱す
る方法では、指向性凝固が更に確実であり、特に、金型
内の最終凝固部（液相と固相との境界部）が湯溜まり部
の上湯口と下型の型湯口との間の近傍にとどまるから、
湯溜まり部から下型を分離することが容易になる。According to the present invention, since the preheating temperature of the intermediate mold and the lower mold is higher than that of the upper mold, when the molten metal is solidified after filling all the cavities, the conductor has a thin groove conductor in the middle and the upper and lower walls. Even with a shape having a thick short-circuit ring, directional solidification that solidifies from the upper side to the lower side can be realized, and casting defects of the conductor can be removed. At this time, in the method of further heating the lower surface of the lower die, the directional solidification is more reliable, and in particular, the final solidification portion (boundary portion between the liquid phase and the solid phase) in the die is the upper spout of the pool. And stays in the vicinity between the lower mold die and
It becomes easy to separate the lower mold from the hot water pool.
【００１２】[0012]
【実施例】図１は実施例の低圧鋳造方法を示す工程図で
あり、予熱装置を除く各部は図２のものと同一であって
同一符号を付す。湯溜まり部４、ストーカ３及び保持炉
２などは図２と同一であり、図２を参照して構造の要点
を再度説明する。溶湯１を補充可能に蓄え空気口２ａと
蓋２ｂとを持つ保持炉２には、ストーク３が底部近くま
で浸漬している。ストーク３の上端に、上下に分離可能
で上湯口４ａを持つ湯溜まり部４が液密に接合される。
下型５は、上湯口４ａと連通可能な型湯口５ｂと下の短
絡環のためのキャビティ５ａとを備える。中間型６は、
軸心に軸６ａを挿入し周辺に導体用の溝のためのキャビ
ティ７ａを備えて積層鉄心７の外周を囲む。上型８は、
上の短絡環のためのキャビティ８ａと羽根のためのキャ
ビティ８ｂとを備える。湯溜まり部４と下型５と中間型
６と上型８とは相互の接合面で分離可能である。DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 is a process diagram showing a low pressure casting method according to an embodiment, and the respective parts except the preheating device are the same as those in FIG. The pool 4, the stoker 3, the holding furnace 2 and the like are the same as those in FIG. 2, and the essential points of the structure will be described again with reference to FIG. A stalk 3 is submerged in the holding furnace 2 that stores the molten metal 1 so that it can be supplemented and has an air port 2a and a lid 2b. A basin 4 which is vertically separable and has an upper spout 4a is liquid-tightly joined to the upper end of the stalk 3.
The lower die 5 is provided with a die spout 5b capable of communicating with the upper spout 4a and a cavity 5a for a lower short-circuit ring. Intermediate type 6
The shaft 6a is inserted into the shaft center, and a cavity 7a for a groove for a conductor is provided in the periphery to surround the outer circumference of the laminated iron core 7. The upper mold 8 is
It comprises a cavity 8a for the upper short-circuit ring and a cavity 8b for the vanes. The basin 4, the lower die 5, the intermediate die 6, and the upper die 8 can be separated from each other at their joint surfaces.
【００１３】実施例の低圧鋳造方法を説明する。上型８
を第１予熱装置１１で予熱すると共に、軸６ａと積層鉄
心７を組付けた中間型６と下型５とを第２予熱装置１２
で上型８より高い温度で予熱し、その後、各予熱装置１
１、１２から取り出した上型８、中間型６及び下型５を
組み立て、図２で説明したように低圧鋳造する。各予熱
装置１１、１２から取り出した上型８、中間型６及び下
型５を組み立てる直後又は直前に下型５の下面を更に第
３予熱装置１３で加熱するとよいし、中間型６と下型５
とを第２予熱装置１２で予熱完了直前に第２予熱装置１
２内で下型５の下面を更に加熱するとよい。第１予熱装
置１１及び第２予熱装置１２はガス炉又は電気炉が適す
るし、第３予熱装置１３は誘導加熱炉が適するが、第１
予熱装置１１及び第２予熱装置１２に誘導加熱装置を使
用したり、第３予熱装置１３にガスバーナなどを使用し
たりできる。The low pressure casting method of the embodiment will be described. Upper mold 8
Is preheated by the first preheater 11, and the intermediate die 6 and the lower die 5 in which the shaft 6a and the laminated iron core 7 are assembled are attached to the second preheater 12.
Preheat at a higher temperature than the upper mold 8 and then each preheating device 1
The upper die 8, the intermediate die 6 and the lower die 5 taken out of the Nos. 1 and 12 are assembled and low pressure casting is performed as described with reference to FIG. Immediately before or immediately after assembling the upper mold 8, the intermediate mold 6, and the lower mold 5 taken out from the respective preheating devices 11, 12, the lower surface of the lower mold 5 may be further heated by the third preheating device 13, or the intermediate mold 6 and the lower mold 5. 5
And the second preheating device 1 immediately before the completion of preheating with the second preheating device 12.
It is advisable to further heat the lower surface of the lower mold 5 within 2. A gas furnace or an electric furnace is suitable for the first preheating device 11 and the second preheating device 12, and an induction heating furnace is suitable for the third preheating device 13.
An induction heating device may be used for the preheating device 11 and the second preheating device 12, and a gas burner or the like may be used for the third preheating device 13.
【００１４】このような方法によれば、上型８より中間
型６及び下型５の予熱温度が高いので、溶湯が全キャビ
ティを充満してから凝固するとき、導体が細い溝導体７
７を中間に介して上下に肉厚な短絡環７８、７５を有す
る形状であっても、上方から下方へ凝固する指向性凝固
を実現して導体の鋳造欠陥を除去することができる。こ
のとき、下型５の下面を更に加熱する方法では、指向性
凝固が更に確実であり、特に、金型内の最終凝固部（液
相と固相との境界部）が湯溜まり部４の上湯口４ａと下
型５の型湯口５ｂとの間の近傍にとどまるから、湯溜ま
り部４から下型５を分離することが容易になる。According to such a method, since the preheating temperature of the intermediate mold 6 and the lower mold 5 is higher than that of the upper mold 8, when the molten metal fills all the cavities and then solidifies, the conductor is a thin groove conductor 7.
Even in the shape having the thick short-circuit rings 78 and 75 at the upper and lower sides with 7 in the middle, it is possible to realize the directional solidification that solidifies from the upper side to the lower side and remove the casting defect of the conductor. At this time, in the method of further heating the lower surface of the lower die 5, the directional solidification is more reliable, and in particular, the final solidification portion (boundary portion between the liquid phase and the solid phase) in the die is the pool portion 4 Since it stays in the vicinity between the upper sprue 4a and the lower spout 5b of the lower die 5, it becomes easy to separate the lower die 5 from the puddle portion 4.
【００１５】[0015]
【発明の効果】この発明のかご形回転子の低圧鋳造方法
によれば、上型より中間型及び下型の予熱温度が高いの
で、溶湯が全キャビティを充満してから凝固するとき、
導体が細い溝導体を中間に介して上下に肉厚な短絡環を
有する形状であっても、上方から下方へ凝固する指向性
凝固を実現して導体の鋳造欠陥を除去することができる
という効果がある。このとき、下型の下面を更に加熱す
る方法では、指向性凝固が更に確実であり、特に、金型
内の最終凝固部（液相と固相との境界部）が湯溜まり部
の上湯口と下型の型湯口との間の近傍にとどまるから、
湯溜まり部から下型を分離することが容易になるという
効果がある。According to the low pressure casting method for a squirrel cage rotor of the present invention, since the preheating temperature of the intermediate mold and the lower mold is higher than that of the upper mold, when the molten metal solidifies after filling all the cavities,
Even if the conductor has a shape that has thin short-circuit rings in the upper and lower direction with a thin groove conductor in the middle, it is possible to eliminate the casting defect of the conductor by realizing directional solidification that solidifies from the upper side to the lower side. There is. At this time, in the method of further heating the lower surface of the lower die, the directional solidification is more reliable, and in particular, the final solidification portion (boundary portion between the liquid phase and the solid phase) in the die is the upper spout of the pool. And stays in the vicinity between the lower mold die and
This has the effect of facilitating the separation of the lower mold from the hot water pool.
【図１】実施例の低圧鋳造方法を示す工程図FIG. 1 is a process diagram showing a low pressure casting method according to an embodiment.
【図２】従来例の低圧鋳造方法を示す縦断面図FIG. 2 is a vertical cross-sectional view showing a conventional low-pressure casting method.
【図３】一般的なかご形回転子の扇形状の縦断面図FIG. 3 is a vertical cross-sectional view of a fan shape of a general cage rotor.
１ 溶湯 ２ 保持炉 ３ ストーク ４ 湯溜まり部 ５ 下型 ５ａ キャビティ ６ 中間型 ６ａ 軸 ７ 積層鉄板 ７ａ キャビティ ８ 上型 ８ａ キャビティ １１ 第１予熱装置 １２ 第２予熱
装置 １３ 第３予熱装置1 molten metal 2 holding furnace 3 stalk 4 molten metal pool 5 lower mold 5a cavity 6 intermediate mold 6a shaft 7 laminated iron plate 7a cavity 8 upper mold 8a cavity 11 first preheating device 12 second preheating device 13 third preheating device
Claims (3)
で浸漬したストークの上端に、上湯口を持つ湯溜まり部
を接合させ、下型は、上湯口と連通可能な型湯口と下の
短絡環のためのキャビティとを備え、中間型は、軸心に
軸を挿入し周辺に導体用の溝のためのキャビティを備え
て積層鉄心の外周を囲み、上型は、上の短絡環のための
キャビティを備え、湯溜まり部と下型と中間型と上型と
は相互の接合面で分離可能にされる低圧鋳造装置を使用
するかご形回転子の低圧鋳造方法において、 上型を第１予熱装置で予熱すると共に、軸と積層鉄心を
組付けた中間型と下型とを第２予熱装置で上型より高い
温度で予熱し、その後、各予熱装置から取り出した上
型、中間型及び下型を組み立てて低圧鋳造することを特
徴とするかご形回転子の低圧鋳造方法。Claim: What is claimed is: 1. A stalk having a top spout is joined to the upper end of a stalk that is immersed near the bottom of a holding furnace capable of storing and pressurizing molten metal, and the lower die has a die spout that can communicate with the upper spout and a lower spout. The intermediate mold encloses the outer circumference of the laminated iron core with a cavity for the short-circuit ring and the cavity for the groove for the conductor inserted around the shaft and the upper mold has the cavity for the short-circuit ring. In the method of low-pressure casting of a cage rotor, which uses a low-pressure casting device in which a cavity for the molten metal, a lower mold, an intermediate mold and an upper mold are separable from each other at their joint surfaces, While preheating with the first preheating device, the intermediate die and the lower die with the shaft and the laminated iron core assembled are preheated with the second preheating device at a higher temperature than the upper die, and then the upper die and the intermediate die taken out from each preheating device. Low-pressure casting of a squirrel cage rotor characterized by assembling a die and a lower die and performing low-pressure casting Build method.
法において、各予熱装置から取り出した上型、中間型及
び下型を組み立てる直後又は直前に下型の下面を更に加
熱することを特徴とするかご形回転子の低圧鋳造方法。2. The method for low-pressure casting of a squirrel cage rotor according to claim 1, further comprising heating the lower surface of the lower die immediately after or immediately before assembling the upper die, the intermediate die and the lower die taken out from each preheating device. Low-pressure casting method for cage rotors.
法において、中間型と下型とを第２予熱装置で予熱完了
直前に第２予熱装置内で下型の下面を更に加熱すること
を特徴とするかご形回転子の低圧鋳造方法。3. The low-pressure casting method for a squirrel-cage rotor according to claim 1, wherein the lower surface of the lower die is further heated in the second preheating device immediately before the intermediate die and the lower die are preheated by the second preheating device. A low-pressure casting method for a squirrel-cage rotor characterized by the following.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP05245834A JP3079853B2 (en) | 1993-10-01 | 1993-10-01 | Low pressure casting method for cage rotor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP05245834A JP3079853B2 (en) | 1993-10-01 | 1993-10-01 | Low pressure casting method for cage rotor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH07100619A true JPH07100619A (en) | 1995-04-18 |
| JP3079853B2 JP3079853B2 (en) | 2000-08-21 |
Family
ID=17139547
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP05245834A Expired - Lifetime JP3079853B2 (en) | 1993-10-01 | 1993-10-01 | Low pressure casting method for cage rotor |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3079853B2 (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7002433B2 (en) * | 2003-02-14 | 2006-02-21 | Microlab/Fxr | Microwave coupler |
| JP2013063459A (en) * | 2011-09-20 | 2013-04-11 | Nakakin:Kk | Aluminum casting apparatus |
| WO2014071481A3 (en) * | 2012-11-08 | 2015-05-07 | Whirlpool S.A. | Squirrel cage rotor and corresponding casting process |
| CN109986056A (en) * | 2018-01-11 | 2019-07-09 | 山西电机制造有限公司 | A kind of cast-aluminum rotor low-voltage cast aluminum process |
| KR20210034048A (en) * | 2018-07-20 | 2021-03-29 | 푸젠 푸후이 테크놀로지 디벨럽먼트 컴퍼니 리미티드 | Method for casting aluminum in a rotor |
-
1993
- 1993-10-01 JP JP05245834A patent/JP3079853B2/en not_active Expired - Lifetime
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7002433B2 (en) * | 2003-02-14 | 2006-02-21 | Microlab/Fxr | Microwave coupler |
| JP2013063459A (en) * | 2011-09-20 | 2013-04-11 | Nakakin:Kk | Aluminum casting apparatus |
| WO2014071481A3 (en) * | 2012-11-08 | 2015-05-07 | Whirlpool S.A. | Squirrel cage rotor and corresponding casting process |
| CN109986056A (en) * | 2018-01-11 | 2019-07-09 | 山西电机制造有限公司 | A kind of cast-aluminum rotor low-voltage cast aluminum process |
| CN109986056B (en) * | 2018-01-11 | 2020-11-06 | 山西电机制造有限公司 | Low-pressure aluminum casting process method for cast aluminum rotor |
| KR20210034048A (en) * | 2018-07-20 | 2021-03-29 | 푸젠 푸후이 테크놀로지 디벨럽먼트 컴퍼니 리미티드 | Method for casting aluminum in a rotor |
| JP2021530361A (en) * | 2018-07-20 | 2021-11-11 | フジアン プフイ テクノロジー ディベロップメント カンパニー リミテッド | How to cast aluminum on a rotor |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3079853B2 (en) | 2000-08-21 |
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